Electromagnetically-operated motor



June 15 1926. 1,588,711

M. D. DOMINGUEZ ELECTROMAGNETICALLY OPERATED MOTOR mmwwf@ Stratum# June15 1926. 1,588,711

M. D. DOMINGUEZ ELECTROMAGNETICALLY OPERATED MOTOR Filed May 15, 1925 3Sheets-Sheet 2 aucun? A 1,588,711 M. D. DOMINGUEZ Filed May l5, 1925 3Sheets-Sheet 5 June 15 1926.

ELECTROMAGNETICAJLY OPERATED MOTOR Patented `lune 15, 1926.

UNITED STATES PATENT OFFICE.

ELECTROMAGNETICALLY-OPERATED MOTOR.

Application filed May 13, 1925. Serial No. 30,105.

'The invention relates to electromagnetically operated motors and has asan object the provision of a motor which may be utilized to actuate thebrakes upon a vehicle, the point-s of a railway switch, or for otheranalogous service.

A further object of the invention is the provision of electric actuatingmeans for vehicle brakes.

A further object of the invention is the provision of means foractuating an electric brake or for performing other like service whichis actuated upon its return to normal position to prevent shock upon themechanism or vehicle to which the same is applied.

Further objects of the invention will appear from the followingdescription when read in connection with the accompanying drawingshowing illustrative embodiments of the invention and wherein Fig. 1 isa side elevation of the motor;

Fig. 2 is a plan view slightly enlarged with the cover removed andpartly in section;

Fig. 3. is a vertical transverse section on line 3 3 of Fig. 2;

Fig. 4 is a diagrammatic view of the device applied to brake actuation,showing a diagram of circuits;

Fig. 5 is a view similar to Fig. 2 of a modification upon a similarscale;

F ig. 6 is a like view of a still further modification, and

Fig. is a vertical transverse section on line 7 7 of Fig. 6.

As shown, the device comprises a casing 10 having perforated lflanges11-12, whereby to secure the same to the under side of a vehicle or toany other structure to which the motor is to be applied. An end of thecasing is shown as formed with a tubular extension 13 to receive theprojection of a tubular core 14. The extension 13 is shown as closed byay cap 15, of non-magnetic material, as brass. serving as an anchor fora rod 16, which in turn carries a disk 17 forming an abutment for acoiled spring 18, adapted to return the core to normal position.

To actuate the core 14 there are shown coils 19, 20, 21, 22, which, asshown, are connected in series by means of the wires 23, 24, 25, 26, 27.The wire 23 is connected to the inner end of a binding post 28 and thewire 2T to the inner end of the binding post 29, which posts presentoutward connections 30 and 31 for conductors power.

The coils 19 to 22 inclusive are each retained in place by beingmounted. upon the cores 32, 33, 34, 35 respectively, which cores arerigidly fixed in position within the casing by means ot' cap screws 36.The coils are retained in place upon the cores against lateral movementthereon by t-hin sheets of insulating material 37 which, in turn. areretained by pins 38 lined in the core pieces. As shown more clearly inFig. 3, the ends ofthe core pieces are cut away upon arcs ol a circle soas to provide a minimum clearance for the movable core 14.

to the source of The core 1 4 is shown as formed as a cylindrical shellintegrally closed at one end and closed at the opposite end by means ofa screw plug 39, which screw plug serves as 21mg abutment for anend ofthe coiled spring To provide a dash pot to cushion the return of themovable core 14 to normal position, the disk 17 is provided with a closefit in the core 14, and the groove 40 is formed in the wall of thecylinder terminating short of the closed end of the cylinder, a hole 41being formed in the screw plug 39 for passage of air. In the return oithe core 14 to normal position, the air beyond the disk 17 may freelyescape until the end of the groove 40 is reached, after which thecompression of the air in the end of the cylinder will check themovement of the core.

The rod 16 is formed with a shoulder at 42 bearing against the interiorof the screw cap 15 and is rigidly mounted upon the cap by means of thenuts 43, thereby serving as an anchor for the coiled spring 18.

The casing 10 is shown as closed by means of a cover 44, retained inplace by cap screws 4o.

The power exerted by the applied through the means cured in the closedend of by pin 47 passing through the end ot' the casing 10 and providedwith a yoke 4 8 at its end. As shown, the yoke 48 is provided with a pin49 which may pass through a brake beam 50, Fig. 4, to act upon brakeactuating apparatus 51, 52, 53.

In the form of the invention shown in Fig. 5, the spring 18 abuts aportion 54 within the cylindrical core 14', and abuts atnthe oppositeend against theJ` interior of core 14 may be of a rod 46 sethe core 14as normal position .tva

the casing l0', being guided and retained in alignment by means ot therod` 46. ln this 'form ot' the invention, the cylindrical extension 55oi' the casing is shown as` screu threaded into the casing l0 and asclosed by means of a screw cap 56. The extension 55 and cap 56 should beformed of non-inagnetic material.

The core pieces 32 to 35 inclusive are indicated as formed .vithshoulders to e'l'lcc` tively retain the coils 19 to 22 inclusive. T helaction orl this form o'l the device is identical with that alreadydescribed with the exception ot the dash pot action of the modi--tication lirst described.

ln the modifications already described, the movable cylindrical core andthe core pieces should be formed oi' magnetic material, as sott iron,and the dish 17, should be ol' non-magnetic material such as brass; inthe form of the invention shown in Figs. 6 and 7, the coils 19, 20, 2l,22 are shown as arranged in the casing l0 in the same manner as` in theforms already described While the cores 32 to 35V inclusive are formedafter the manner illustrative in Fig. 5. ln this i'orm ol the inventionthe movable core 57 is formed as a solenoid and is connected in.parallel with coils 20 and 2 1V by means ot Wires 58 and 59.

Binding posts 60e-,6l are shown mounted in the end o' the casingadiacentJ the extension 62 thereot for making connection with each ofthe coils within the casing.Y 'lhe extension 62 should be formed ofnon-magneticV material.

rlfhe movable core 57 is shovvn as formed with a central rod 63 aboutwhich insulating material is Wound andupon which insulating material.the coil 64' is formed, the Whole being then covered with a suitablecovering 65. Vlilountcd upon the rod 63 there is a head 66 provided WithWings 67-63 projecting intoV longitudinal grooves 697-70, 'formed in theextension 62 to guide the movement of the movable core and to preventrevolution of the same, which would have a bad effect upon theconnect-ing wires 58-59- The rod 63 is shown as projecting beyond thehead 66 and as provided with Wings 7l-72 having` mounted thereon theVbinding posts T3-4,74 tov which are connected the conductors 53-59 andalso the ends of the coil Gil. i lilountedupon the end oli the rod 63isv a piston 75 adapted to enter the cylinderZG to4 provide a dash potaction for cushioning the return of the movable core to under influenceof spring 7T Ash/etere, described, the.V rod 73 through which thepoiveris applied should be formed of, non-magnetic inaterial.y

Connected as described, the polarity ofthe. individual energized coilsis such as to cause ivhile the rods 16 and lf,

Vsaid Ylined cores and the movable core to be drawn forcibly into thelield oli the tiXed coils when the device is energized.

ris diagrammatically shoivn in Fig. 4, the conductors T9-30 may beconnected through a switch 8l with4 any suitable source of poiver 32 or83, a rheostat Seibeing included in one side of the circuit to graduatethe application ot the energy to the device by means of a coupling 85.Other devices may be connected in parallel with the one shown as, forinstance, the bra-ke mechanism upon other cars ot' av train.

A limiting resistance 86 is preferably inserted in one side of thecircuit adjacent the connection to each individualmechanism.

ln the form oli the invention shown in Fig'. 5, a tapped opening S isshown to which a suitable lubricating device may be attached ittdesiredI Y Minor changes 'may be made in the physical embodiment oftheinvention Without departing from the spirit thereof" Withinthe scope ofthe appended claims.

l claim:

l. An. electromagnetically operated motor comprising, in combination, aplurality of lined core pieces having Jfaces in juxtaposition, coilsmounted upon andi` encircling said cores, said faces` bearingsubstantiallysemicircular' recesses, a movable core normally projectinginto the space between certain ol: said cores and adapted to be drawnintol the space between other ot said corespupon energization of thecoils, means lor connecting said movable core to a memberV to beoperated.

2. in electromagnctically operated motor comprising, in combination, aplurality of opposed fixed cores, coilsmounted upon and encircling saidcores, a Y cylindricall core adapted to be draivn between said lined'cores when said coils are energized, a spring extending Within saidmovable core resisting the movement thereof and4 adapted to return thesame to normal position, and means toV connect said movable core amember to be operated.

3. An electromagnetica-ily operated motor comprising, in combination, aframe, a plurality of core pieces fixed in opposed pairs, coils mounted.upon and encircling` said cores, a movable cylindrical core project-ing` normally between certain of adapted. to be drawn bet-Weenothers thereof when said' coils are ener;v Zed, a iiXed rod projectingintosaid movable core, a spring anchored to said rod and abuttingagainst a portion ot'said niovable core to return the saine. to normalposition when said coils are deenergized, and means tol connect saidmovable core with a member to. be operate-di il, An electroinegneticallyoper-ated motor comprising, in` combination', atraine, cores in saidtrame rigidly mounted in said frame in opposed pairs and having coilsmounted thereon, a movable cylindrical core projecting between one pairof said fixed cores and adapted to be drawn between another pair thereofwhen said coils are energized, a rod anchored to said frame projectinginto said core, a disk mounted upon said rod adapted to have a dash potaction with a portion of said cylinder to cushion its return to normalAposition, a spring mounted on said rod abutting against said disk andagainst an end of said cylindrical core to return the same to normalposition, and means to connect said movable core with a part to beoperated.

5. An electromagnetically operated motor comprising, in combination, aframe, fixed core pieces rigidly carried by said frame in opposed pairs,coils mounted upon and encircling said cores, a sheet of insulatingmaterial retaining each coil in position, means carried by each core toretain said sheet and coil in position, a movable core mounted toreciprocate between said fixed cores, and means to connect said movableCore with a member to be operated.

6. An electromagnetically operated motor comprising, in combination, acasing, cores fixed in said easing in opposed pairs, coils mounted uponsaid cores, said casing having a cylindrical extension, a cap for saidextension, a movable cylindrical core normally housed in said extensionand projecting between one pair of said fixed cores, a rod ligidlyanchored to said cap and projecting into said movable upon said rod andabutting a portion thereof at one end and against the interior of themovable core at its other end, whereby to return the core to normalposition, and means to connect said movable core with a part to beoperated.

MANUEL D. DOMINGUEZ.

core7 a spring mounted

